Stable and unstable plasma perturbations in the ionospheric F region, caused by spatial packet of atmospheric gravity waves

Rapoport, Yuriy; Hayakawa, Masashi; Gotynyan, O.E.; Ivchenko, V. N.; Fedorenko, A.K.; Selivanov, Yu.A.

doi:10.1016/j.pce.2008.09.001

Cited by 14 publications

(13 citation statements)

References 21 publications

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“…The idea that gravity waves destabilize the postsunset equatorial ionosphere traces to the work of Kelley et al [1981] but has lately received considerable theoretical and modeling attention [e.g., Vadas and Fritts, 2004;Fritts and Vadas, 2008;Vadas and Keskinen, 2010;Vadas and Liu, 2009;Rappaport et al, 2009;Keskinen and Vadas, 2009;Tsunoda, 2010]. Empirical evidence for a connection between gravity wave and ESF occurrence is concurrently being sought [e.g., Fritts et al, 2009;Takahashi et al, 2009;Abdu et al, 2009;Sreeja et al, 2009].…”

Section: Introductionmentioning

confidence: 99%

Ionospheric Irregularities

Hysell

Aveiro

Chau

2014

Modeling the Ionosphere–Thermosphere System

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Section: Introductionmentioning

confidence: 99%

Ionospheric Irregularities

Hysell

Aveiro

Chau

2014

Modeling the Ionosphere–Thermosphere System

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“…Clark et al, 1971;Rapoport et al, 2004Rapoport et al, , 2009Sorokin and Fedorovich, 1982;Alperovich and Fedorov, 2007). In particular, the theory of "neutralloaded" MHD waves in the ionospheric plasma (including motion of neutrals (see e.g.…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 99%

“…Herron (1966) has found that these waves can be captured into the ionospheric waveguide at the Alfvén speed minimum in the F region. Further development of these ideas brought the concept of vortex planetary electromagnetic waves (Kaladze et al, 2003;Khantadze, 1973;Aburjania et al, 2002Aburjania et al, , 2003aAburjania et al, , 2005Aburjania and Chargazia, 2011;Rapoport et al, 2011Rapoport et al, , 2012c. The developed theory of PEMW is supported by a number of observational results of planetary-scale electromagnetic perturbations (see e.g.…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 99%

Excitation of planetary electromagnetic waves in the inhomogeneous ionosphere

et al. 2014

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Abstract. In this paper we develop a new method for the analysis of excitation and propagation of planetary electromagnetic waves (PEMW) in the ionosphere of the Earth. The nonlinear system of equations for PEMW, valid for any height, from D to F regions, including intermediate altitudes between D and E and between E and F regions, is derived. In particular, we have found the system of nonlinear one-fluid MHD equations in the β-plane approximation valid for the ionospheric F region (Aburjania et al., 2003a(Aburjania et al., , 2005. The series expansion in a "small" (relative to the local geomagnetic field) non-stationary magnetic field has been applied only at the last step of the derivation of the equations. The small mechanical vertical displacement of the media is taken into account. We have shown that obtained equations can be reduced to the well-known system with Larichev-Reznik vortex solution in the equatorial region (see e.g. Aburjania et al., 2002). The excitation of planetary electromagnetic waves by different initial perturbations has been investigated numerically. Some means for the PEMW detection and data processing are discussed.

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“…If so, it is necessary to avoid absolute instability, and wave generation. Also, a perturbation growing in the system, in the linear stage of instability, with maximum increment (time rate), can become a seeding factor for further development of nonlinear perturbations [38,39]. Moreover, linear decay of interesting entities like solitons can be partially overcome, or their amplitude can be even increased, in definite frequency ranges due to linear gain in an active nonlinear system.…”

Section: Introductionmentioning

confidence: 99%

Active and tunable metamaterials

Boardman

Grimalsky

Kivshar

et al. 2010

Laser & Photonics Reviews

217

145

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Metamaterial research is an extremely important global activity that promises to change our lives in many different ways. These include making objects invisible and the dramatic impact of metamaterials upon the energy and medical sectors of society. Behind all of the applications, however, lies the business of creating metamaterials that are not going to be crippled by the kind of loss that is naturally heralded by use of resonant responses in their construction. This review sets out some solutions to the management of loss and gain, coupled to controlled and nonlinear behavior, and discusses some critical consequences concerning stability. Under the general heading of active and tunable metamaterials, an international spectrum of authors collaborates here to present a set of solutions that addresses these issues in several directions. As will be appreciated, the range of possible solutions is really fascinating, and it is hoped that these discussions will act as a further stimulus to the field.

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Stable and unstable plasma perturbations in the ionospheric F region, caused by spatial packet of atmospheric gravity waves

Cited by 14 publications

References 21 publications

Ionospheric Irregularities

Ionospheric Irregularities

Excitation of planetary electromagnetic waves in the inhomogeneous ionosphere

Active and tunable metamaterials

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